1. Someone watches TV on average 4 hours each day. The TV is connected to a 220 V voltage so that the electric current flows through the TV is 0.65 Amperes. If the electric company charges P 0.042 per kWh. How much it will cost for using electric energy for TV for 1 month (30 days).

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PROBLEM SOLVING
INSTRUCTION: Solve the following problems Write your solution on the
spaces provided (5 points each)
1. Someone watches TV on average 4 hours each day. The TV is connected
to a 220 V voltage so that the electric current flows through the TV is 0.65
Amperes. If the electric company charges P 0.042 per kWh. How much it
will cost for using electric energy for TV for 1 month (30 days).
2. When a current of 1A flows through a wire, the drift velocity of the
electrons is 0.9 mm/s. What will be the drift velocity of the electrons when
a 2A current flows through another wire of the same material having
double the length and double the area of cross section and same
temperature.
3. A conductor whose diameter is 0.175 inch has a resistance of 0.5 ohm.
The wire is drawn through a series of dies until its diameter is reduced by
0.095 inch. What is the resistance of the lengthened conductor?
4. If the certain conductor has an area of 356,400 CM, what is the radius of
this conductor in cm?
5. A wire has a resistance of 17.5 ohms. If its length is 560 m, how much
length must be cut off from the wire in order to reduce its resistance by 5
ohms?
Transcribed Image Text:PROBLEM SOLVING INSTRUCTION: Solve the following problems Write your solution on the spaces provided (5 points each) 1. Someone watches TV on average 4 hours each day. The TV is connected to a 220 V voltage so that the electric current flows through the TV is 0.65 Amperes. If the electric company charges P 0.042 per kWh. How much it will cost for using electric energy for TV for 1 month (30 days). 2. When a current of 1A flows through a wire, the drift velocity of the electrons is 0.9 mm/s. What will be the drift velocity of the electrons when a 2A current flows through another wire of the same material having double the length and double the area of cross section and same temperature. 3. A conductor whose diameter is 0.175 inch has a resistance of 0.5 ohm. The wire is drawn through a series of dies until its diameter is reduced by 0.095 inch. What is the resistance of the lengthened conductor? 4. If the certain conductor has an area of 356,400 CM, what is the radius of this conductor in cm? 5. A wire has a resistance of 17.5 ohms. If its length is 560 m, how much length must be cut off from the wire in order to reduce its resistance by 5 ohms?
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